Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7d88fcc518b245…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 12:08:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5aa71063d5bd2f592592496c08e0fd3f SHA-1: 01b314446e6b6ecb6a58356c15864242c520e8a2 SHA-256: 2f7d88fcc518b2455645d04900ba45d7f13e5288145d73f447828915602747f2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as offers for game cheats and free currency. The primary lure URL is http://netcdn.tw/app/406889139/free-spins-on-coin-master-link-game-hack, which likely leads to further malicious content or downloads. The document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/free-spins-on-coin-master-link-game-hack In PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-animation-pack-roblox_GM431946152.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/roblox-lumber-tycoon-2-hack_GM431946152.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/robuxfun-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/roblox-rc7-free-download_GM431946152.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/roblox-get-coordinates-hack_GM431946152.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://www.highlandernepal.com/assets/ckfinder/userfiles/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FF 22808 bytes
SHA-256: 2b9e444020d54e66e3c0ac55e4eaa793ed03b47056f74a7d636f615b640df892
font_01_sfnt_off000063c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C6 18344 bytes
SHA-256: e8d74cdfafe168009f9dc4b70b31a19d6777835fd11eed0a51de0eb2e067c79b